GONIOBASIS. 283 



182. G. informis, Lea. 



Goniobasis informis, Lea, Proc. Acad. Nat. Sci., p. 154, May, 18G3. Obs., xi, p. 92, 

 t. 23, f. 41. 



Description. — Shell smooth, cylindrico-conical, dark horn-color, 

 without bands; spire somewhat elevated; sutures irregularly im- 

 pressed; whorls about seven, impressed in the middle; aperture 

 rather small, nearly ovate, whitish withiu; outer lip acute, very sinu- 

 ous ; columella white and very much twisted. 



Habitat. — Tall of the Ohio at Louisville, Ky. ; W. H. DeCamp, M.D. 



Diameter, -19 ; length, -60 of an inch. 



Observations. — Only two specimens were sent to me by Mr. Currier, 

 one of which is only about half-grown. It is very different -p- r^^^ 

 from any species I have seen, having the appearance of 

 being deformed by the impressed or constricted middle 

 of the whorl. The bulging of the shoulder immediately 

 below the suture has a corresponding thickening within. 

 The outer lip is very much incurved above the middle of the whorl 

 at the impressed portion of it. The aperture is nearly one-third the 

 length of the shell. — Lea. 



183. G. vittatella. Lea. 



Goniobasis vittatella, Lka, Proc. Acad. Nat. Sci., p. 155, May, 1863. Obs., xi, t. 23, 

 1'. 38. 



Description. — Shell smooth or subcarinate, conical, dark brown, 

 single-banded ; spire somewhat acuminate ; sutures linear ; whorls 

 eight, flattened ; aperture small, subrhomboidal, dark within ; outer 

 Pjg548. lip acute, somewhat sinuous; columella bent in and twisted. 



Habitat. — Cumberland Gap, East Tennessee ; Major S. S. 

 Lyon, U. S. A. 



Diameter, -20; length, -55 of an inch. 



Observations. — This is a pretty little species when perfect, 

 but most of the specimens sent were imperfect, and covered with 

 vegetable and mineral substances difficult to remove. There is a 

 small, light band on the upper part of the whorls immediately below 

 the suture, which is more or less visible on all the specimens before 

 me, some of which have a carina on the upper terminal whorls. In 

 outline and size it is near to Melania {Goniobasis) glabra (nobis), but 



